In recent literature, a new chromatic adaptation transform, CAT16, has been published to improve upon the widely used CAT02 model. The CAT16 model is based on the form of the CAT02 transform adopted in CIECAM02, but uses a slightly different sensor space to fix some gamut problems plaguing CIECAM02 and adopts a two‐step CAT to ensure symmetry and transitivity. CAT16 is included in CAM16 but is also being promoted as a stand‐alone CAT, one that can be used outside of the CAM16 model. However, the use of CAT16 as a stand‐alone model can cause inconsistencies in the calculated corresponding colors due to the presence of the relative luminance of the adapting white (Y_w) in the von Kries‐Ives gain control factors. Such inconsistencies are not present for the stand‐alone version of the CAT02 model, which, unlike the version adopted in CIECAM02, does not include the Y_w factors. CAT16 should therefore be modified by omitting the Y_w factors. In this article, we will briefly discuss these issues in more detail and provide a consistent two‐step CAT adopting the CAT16 sensor space.

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有关CAT16色适应转换的一些问题

在最近的文献中，已经发布了一种新的色彩适应变换CAT16，以改进广泛使用的CAT02模型。CAT16模型基于CIECAM02中采用的CAT02变换的形式，但是使用略有不同的传感器空间来解决困扰CIECAM02的一些色域问题，并采用两步CAT来确保对称性和可传递性。CAT16包含在CAM16中，但也正在作为一种独立的CAT进行推广，可以在CAM16模型之外使用。但是，由于存在自适应白光（Y _w）中的von Kries-Ives增益控制因子。CAT02模型的独立版本不存在这种不一致，与CIECAM02中采用的版本不同，CAT02模型不包括Y _w因子。因此，应通过省略Y _w因子来修改CAT16 。在本文中，我们将更详细地简要讨论这些问题，并提供采用CAT16传感器空间的一致的两步CAT。